CN1250706A - Under workpiece preheating block used for metal cleaning apparatus - Google Patents
Under workpiece preheating block used for metal cleaning apparatus Download PDFInfo
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- CN1250706A CN1250706A CN99122457A CN99122457A CN1250706A CN 1250706 A CN1250706 A CN 1250706A CN 99122457 A CN99122457 A CN 99122457A CN 99122457 A CN99122457 A CN 99122457A CN 1250706 A CN1250706 A CN 1250706A
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- preheating block
- workpiece preheating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K7/00—Cutting, scarfing, or desurfacing by applying flames
- B23K7/06—Machines, apparatus, or equipment specially designed for scarfing or desurfacing
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- Mechanical Engineering (AREA)
- Gas Burners (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Hydrogen, Water And Hydrids (AREA)
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Abstract
A lower pre-heat block assembly (9) for use with a metal scarfing apparatus (5) is disclosed. The lower pre-heat block assembly has a lower block (38) and an extension (39) engaged upon and in overlying relationship with a front face (46) of the lower block. A gas discharge outlet (56) is defined within the front face of the block. The extension may partially overlie the gas discharge outlet such that a gas discharge orifice (70) is defined in the front face of the block by the extension. The extension includes an upper face (58) which extends forwardly from the front face of the block, and is recessed with respect to an upper face (41) of the block. So constructed, when a sheet-like oxidizing gas flow (82) is passed over the upper faces of the block and the extension, respectively, and as a fuel gas (85) is emitted through the gas discharge outlet, the fuel gas is pneumatically compressed between the oxidizing gas flow and the upper face of the extension such that the fuel gas is substantially uniformly distributed along the longitudinal length of the lower pre-heat block assembly and forms a uniform sheet-like fuel gas flow (90) which underlies and adjoins the sheet-like oxidizing gas flow so as to prevent ambient air from aspirating into the oxidizing gas flow and thereby result in a smooth and uniformly scarfed surface on the metal workpiece.
Description
The present invention relates generally to and is used in a kind of device that metal works is done the blemish scafing (scarfing) of heat chemistry mode.Particularly, be used for this device a kind of through improved workpiece preheating block sub-assembly down, wherein this block assembly is done to such an extent that generate a kind of sample air-flow separate the sheet oxidizing gas stream that is produced in cleaning processing, can make and obtain smooth finishing face on metalwork.
At the long steel plate of picture, in the production and fine finishining of the metalwork of steel ingot and bar and so on, by steel part and have have at least one the cleaning unit cleaning plant Yan Qiding, the end or side between a relative motion clear up or Surface Finishing, to remove such as crackle, the crack, slag inclusion, the cosmetic bug of oxide skin, and the mechanical defect that causes by for example rolling or casting process.The known manner of this type of cleaning plant is to reaching on the end cleaning assembly that top, the end and opposite side make progress to be installed the whole wide of workpiece, causes when workpiece passes through between the cleaning unit of this cleaning plant, in time clears up each side of workpiece.
The top of cleaning plant, respectively there are a pipeline and head assembly in side and end cleaning unit, in order to receive and to distribute oxygen and combustion gas to give opposed workpiece preheating block up and down or as the block assembly of parts of each cleaning assembly.Corresponding workpiece preheating block up and down separates each other, so that form the oxygen cutting groove betwixt, a certain amount of oxygen that pressure is arranged by groove guiding workpiece, makes the cleaning processing of this heat chemistry mode to keep and carries out.Typical workpiece preheating block down includes a blast tube of floss hole; its position next-door neighbour is by the formed oxygen groove of workpiece preheating block up and down; it can be near Oxygen Flow discharging combustion gas; oxidation reaction on the surface of the work is continued; Oxygen Flow can also be protected in case suction; that is be to prevent that oxygen from mixing with on every side atmosphere, and this suction mixes the effect of the cleaning processing that is considered to weaken this heat chemistry mode.
At the US2 that belongs to Ai Ermengqi people such as (Allmang), 838, disclose a this known example of workpiece preheating block type down in 431 United States Patent (USP)s, workpiece preheating block wherein is an overall structure, also has the array of spaced gas outlet arranging on the broad ways on this piece front.Combustion gas is delivered to import by numerous laterally spaced combustion gas circuits, these pipelines from the back of piece extend to just in time after lateral bore, and be communicated with the inner of outlet.Elongated feed rod or rod, it is made up of a plurality of positioning disks in the hole, and this hole is separated into series of identical gas distribution chamber equably.End in a known manner, the end in this hole is sealed.
Though people's such as Allmang the gas outlet on following workpiece preheating block front has done to exceed the improvement of known descaling machine at that time, promptly done airtight interval with other mouthful separately at the gas port place, play and prevent the effect that extraneous gas mixed because of suction with oxidizing gas stream, but still have extraneous air can trend towards being pumped down to problem between the gas outlet, extraneous air still can be inhaled in the oxidizing gas stream as a result.
The one of ordinary skilled in the art knows, the sheet Oxygen Flow promptly when oxygen during by workpiece preheating block up and down the protection of formed oxidizing gas stream be vital by generating smooth finishing face on the workpiece of clearing up because any variation or the discontinuous variation that all can cause cleaning face of gas flame on the workpiece preheating block down.This variation can cause removing metal unevenly, brings concavo-convex result, causes the degree of depth that must increase cleaning could allow those concavo-convex removals.That is to say, must remove the object surface of q.s so that all are removed in the existing blemish that is produced possibly by this cleaning technology that reaches of this cleaning first being processed.In fact, people's such as Allmang the gouge device that reaches other similar structures has caused excessive metal removal, and this just excess metal removal causes loss in productivity increase in the workpiece finished machined.
According to 3 of Allmang, 231, improved gouge device in No. 431 United States Patent (USP)s, as wherein the 2nd hurdle 34 to 72 is capable, and the 3rd hurdle the 1st to 13 row recorded and narrated, adopted a position under this oxygen groove about 1/4th inches, about 1/2nd inches long long barrier rib can prevent surrounding air oxygen intake stream.It is described at the 2nd hurdle 61 to 65 row to press Allmang, can be sure of: at each certain some place of going near preheating (air inlet) mouth, the qualification effect of the barrier rib of oxygen and fuel gas mixer both sides prevents atmosphere and oxygen mix.
Although the patent of Allmang is indicating a kind of improvement in the art, a kind of better cleaning plant still need be arranged, it should be the smooth repair surface that can more stably generate by the cleaning metal works, this is 5 by She Waerte people such as (Showalter), the developed the sort of purpose of workpiece preheating block assembly down in 497, No. 976 United States Patent (USP)s.A kind of heat chemistry cleaning plant of Showalter obtains the cleaning of flat surface by a kind of workpiece preheating block assembly down is provided, it comprises by evenly sending the improvement combustion gas transfer system that gas-flow uses in metalwork overall with scope, thereby and the peak valley that the known gouge device of the effect that it plays the protection oxidizing gas stream before guaranteeing causes is reduced to minimum.Its measure is to adopt workpiece preheating block assembly under the two-piece type, promptly have a matrix and with removable, and be fixed to a extension on this piece front with contact and overlapping relation.Be processed with a microscler air discharge duct on the extension, this groove with make in this piece inside and on this piece front total length, be communicated with across a series of steam vents that separate that extend.Stopper in this extension also has is guaranteed the abundant mixing of combustion gas in order to the eddy current effect that produces gas-flow, make combustion gas laterally upwards being sprayed by air discharge duct with uniform airflow at extension thus.
People's such as Showalter following preheating assembly is being represented a kind of tangible progress in the present technique field, can be still just can produce one two following workpiece preheating block assembly along the groove in this extension is made accurate machining, but also must adopt can in gas-flow, form eddy current so that the interior stopper that the combustion gas on this extension overall with is evenly assigned prevent oxidation/Oxygen Flow by about workpiece preheating block inter-module and lead this metal objects or workpiece carry out heat chemistry surrounding air and its persorption when clearing up.
Therefore, seem that what be difficult for accomplishing is a kind of improved workpiece preheating block assembly down that is used on the heat chemistry cleaning plant needing in the art, its design and make simply and can guarantee to produce a kind of gas-flow that is used to protect the sample in blocks of this oxidizing gas stream.
In people's such as Showalter the following workpiece preheating block assembly, disclosed air discharge duct is arranged on and is similar to 3 of Allmang, 231, No. 431 the disclosed gas letdown tank with stopper of United States Patent (USP) is set in other traditional extension, the result is exactly if this gas emission groove of any some place on its length results in blockage or when hindering, may make ambient air be inhaled into oxidizing gas stream and cause form in the metal cleaning concavo-convex.So need following workpiece preheating block assembly as a kind of improvement of cleaning plant, exhaust outlet wherein seldom can result in blockage in this modular substrate or piece, and its extension can be placed in contact and stowed position, cause and on piece spare face, form the vent that requires size, thereby simplified the manufacturing of this time workpiece preheating block assembly, combustion gas is evenly distributed on the overall with of following block assembly, even when the air exit place of protection oxidizing gas stream had obstruction or obstruction in scale removal process, this time piece also can show superperformance.
At last, be drawn in the oxidizing gas stream, in people's such as improved Showalter following workpiece preheating block assembly, still have this problem although the stopper in the patent of Allmang can reduce surrounding air.Therefore need the following workpiece preheating block assembly of the improvement in a kind of cleaning plant that is used in the heat chemistry mode, its structure will help in a kind of compression that forms the aerodynamics direction by the oxidizing gas stream on this time workpiece preheating block assembly, or claim to push in the combustion gas that is applied to this oxidizing gas stream and following workpiece preheating block inter-module, cause this combustion gas on the same full width orientation of this time workpiece preheating block assembly, evenly to distribute, to form a kind of gas-flow in the form of sheets, when it constantly towards to the time by the motion of the metalwork cleared up, this oxidizing gas stream will be kept apart and nestle up to gas-flow, consequently make the concavo-convex possibility that can form in the scale removal process reduce to minimum, thereby improve the productivity ratio in the metal finishing process.
A kind of improved following workpiece preheating block assembly that is used for the heat chemistry descaling machine provided by the invention, it has overcome some shortcomings that design of other the following workpiece preheating block assembly in the present technique field.Down workpiece preheating block assembly of the present invention provide a kind of simple, effectively, the device of high degree of flexibility arranged, it is used for the combustion gas that distributes equably on the overall with of following workpiece preheating block assembly, and in order to forming a kind of gas-flow of being close to and isolating the oxidizing gas stream by this time workpiece preheating block assembly in the form of sheets, metal objects or workpiece that this oxidizing gas stream leads along a flow channel that this polishing cleared up by the heat chemistry mode in processing.The following workpiece preheating block assembly of this improvement with known following workpiece preheating block assembly simplified in comparison, more reliable aspect this oxidizing gas stream in protection, can also the longshore current footpath keep its sheet sample characteristic of fluid reliably so that adopt this cleaning plant to carry out forming less to the greatest extent on the metalwork surface of heat chemistry cleaning concavo-convex.
The present invention not only has flexibility, maintainability and the reliability of height, also has design and simple to operate, offer the following workpiece preheating block assembly that is used for the heat chemistry cleaning plant comprise a module plate, it has opposed top and bottom, opposed end face, and the mutually opposed front-back that extends between the both ends of the surface in the vertical.Wherein make to have an exhaust outlet, the front that it crosses over piece extends longitudinally.A module extension contacts and partly is stacked and placed on the front of this piece with the piece front.This extension can partly cover exhaust outlet to form one on demand, the steam vent that is communicated with exhaust outlet on this piece front.Extension adopts removably to be fixed in the piece preceding structure.This design feature makes workpiece preheating block assembly down of the present invention need not to carry out accurate machining thereon then and makes gas emission groove or hole, less sensitive to dust or other obstruction dirts of exhaust outlet simultaneously, and this may hinder down the transversely even distribution of combustion gas of block assembly elsewhere.Therefore this makes that possible destruction reduces to minimum in this gas-flow, also make down the workpiece preheating block establishment of component simple, thereby productivity ratio is higher in the use.
This extension have separate top and one opposed below, opposed end face and the opposed front-back that between this opposed end face, extends in the vertical.This extension back on the front of piece with the stacked relation setting.This is that relatively this is recessed above piece above extension, promptly be can hold a bit, thereby makes the top level of extension be adorned to such an extent that form a step from the last prone predetermined altitude of this piece.Extension also has a guide edge that separates previously with piece, and it is along longitudinal extension on the length direction of this extension.This extension guide edge relatively extension front retraction forming a groove in order to protection, or the guide edge of isolating this extension front.
Workpiece preheating block assembly down of the present invention is to be used in common heat chemistry cleaning plant, wherein provide one and go up the workpiece preheating block assembly, it is isolated that this time workpiece preheating block assembly is gone up the workpiece preheating block assembly relatively, also between two block assemblies, constitute an oxygen groove, and oxygen forms one oxidizing gas stream by its process and along one towards being moved by the runner of cleaning metalwork extension.This brand new of workpiece preheating block assembly down of the present invention, even in the mode of not knowing in the art, utilize this expansion of this oxidizing gas stream to cause the notional compression of aerodynamics, or pushing the piece front of this oxidizing gas stream and module, along this modular block front of the longitudinal length of this time workpiece preheating block assembly and be located on this extension that is be to cross by in the combustion gas between beam overall second upper surface of cleaning workpiece, guarantee that this combustion gas is substantially along being assigned in uniform way in the length range of this time workpiece preheating block assembly front, and allow this compressed combustion gas that distributes in existing mode pass through by the formed pneumatic groove of the guide edge of oxidizing gas stream and this extension with cardinal principle homogeneous sheet streamer mode, guarantee that this sheet gas-flow is close to this sheet sample oxidizing gas stream and passes under it, and in both flow to the metal works of being cleared up through this gas channel together thereafter.The new construction of the following workpiece preheating block assembly that provides like this can make combustion gas uniform on the overall with of oxidizing gas stream, the persorption that greatly reduces ambient atmosphere and oxidizing gas stream may, this structure also guarantee one stably the sheet oxidizing gas stream shift to workpiece, thereby generate more smooth cleaning surface of the work, and bring productivity ratio and the manufacturing efficient higher than existing cleaning plant.
Therefore this improved workpiece preheating block assembly down of the present invention also produces a kind of new method of using the heat chemistry mode to clear up and protect this oxidizing gas stream, and this method has comprised the step that allows this sheet oxidizing gas stream flow through on the upper surface of the modularization substrate piece of this time workpiece preheating block assembly; The discharging combustion gas forms the step of sheet gas-flow from the gas emission mouth that contiguous this this piece front above piece first makes, and gas-flow is below oxidizing gas stream; With oxidizing gas stream compress this front and on this time workpiece preheating block assembly extension, form second above between this sheet gas-flow, cause this sheet gas-flow under this sheet oxidizing gas stream, to be assigned equably substantially, and at this two when all in the form of sheets air-flow flows through gas channel jointly and is sent to by the cleaning workpiece, this sheet air-flow protection sheet oxidizing gas stream, make it and isolated from atmosphere, thereby on metalwork, forming the step on smooth cleaning surface, nothing is concavo-convex because of what allow the atmosphere suction oxidizing gas stream caused on the surface on.
The step that combustion gas is formed the sheet air-flow also comprises facing to this piece front, this is above extension, and oxidizing gas stream pneumatic mode extruding combustion gas, and make combustion gas by by oxidizing gas stream and this pneumatic groove that guide margin constituted that extends on longitudinal length above extension, so that this combustion gas forms the step of sheet sample gas-flow at contiguous this oxidizing gas stream place.
So, the purpose of this invention is to provide workpiece preheating block assembly under a kind of improvement of in the metal cleaning apparatus of clearing up the smooth cleaning face of stable lasting generation in the metalwork in the heat chemistry mode, using.
Another object of the present invention provide a kind of design and simple in structure, use durable reliably, be easy to the workpiece preheating block assembly under the improvement in the metal cleaning apparatus that is used in of working service.
Further object of the present invention provides workpiece preheating block assembly under a kind of improvement that is used on the metal cleaning apparatus, this block assembly make the possibility that atmosphere is sucked oxidizing gas stream reduce to minimum and a kind ofly be close to oxidizing gas stream in order to form, the sheet gas-flow of protection oxidizing gas stream in heat chemistry cleaning processing.
By reading specification and accompanying drawing thereof, to these purposes of the present invention, other purposes, characteristics, and advantage of the present invention understood solve more clear.Each figure is:
Fig. 1 is the cleaning plant schematic side elevation of a width of cloth as partial cutaway, and workpiece preheating block is in the heat chemistry cleaning operation and steel plate is done on the position of preheating before beginning under the improvement wherein of the present invention;
The front perspective view that Fig. 2 decomposes for workpiece preheating block first embodiment under the present invention;
Fig. 3 is the side view of band partial cutaway of the following workpiece preheating block embodiment of Fig. 2, and wherein the guide edge along its extension constitutes a groove;
Fig. 4 is the exploded perspective view of workpiece preheating block second embodiment under the present invention;
Fig. 5 is the following workpiece preheating block partial, partially-cross-sectioned side-elevation view of Fig. 4, wherein constitutes a groove along the extension guide edge;
Fig. 6 is the partial front elevation view of Fig. 4 workpiece preheating block;
Fig. 7 is the exploded perspective view of workpiece preheating block the 3rd embodiment under the present invention;
Fig. 8 is the side view that the work of the following workpiece preheating block of Fig. 7 has partial cutaway, wherein makes to have a groove on the guide edge of this extension;
Fig. 9 is the stereogram of workpiece preheating block the 4th embodiment under the present invention, and wherein block makes an integral body.
Figure 10 is the side view of band partial cutaway on the following workpiece preheating block of Fig. 9.
Figure 11 is the partial schematic diagram of workpiece preheating block down in the employing heat chemistry mode cleaning plant of Fig. 2 to 6, explanation by on this time workpiece preheating block by the formed pneumatic groove of oxidizing gas stream, and explanation snaps on the formation of gas-flow in the form of sheets of this oxidizing gas stream of face when its passage being cleared up metalwork along guiding moves.
See accompanying drawing for details, wherein similar parts adopt similar label, heat chemistry cleaning plant 5 shown in Fig. 1 among all figure.Cleaning plant 5 comprises pipeline that makes with known manner and head assembly 6, and this pipeline and head assembly make to be admitted and install one and go up that workpiece preheating block assembly 7 and one separates, opposed workpiece preheating block assembly 9 down.This cleaning plant also comprises the stacked base plate 10 (riding shoe) of a common form, is fixed on pipeline and the head assembly.Stacked base plate has a lower surface 11 of making to have at least one slippage pad 13 on it.Stacked base plate that makes like this and skidding facilitate a metal works, for example be as passing through this cleaning plant with the block plate shown in the label " S " forward along transfer path among Fig. 1, this pipeline and head assembly just move into place, 13 of the skidding of stacked base plate contact and to straddle of correspondence of this steel plate upper and lower, or on the side, its corresponding each face all can be equipped with cleaning plant like independent, the form class, they are if not the same, but also with Fig. 1 in the structural similarity of cleaning plant 5.Cleaning plant 5 among Fig. 1 be one corresponding to this steel plate one forward the time goes up cleaning plant in this place along transfer path.The structure of this cleaning plant 5, and the more specifically structure of this pipeline and head assembly 6 number is in 5,234,658 the patent more detailed description to be arranged what issue people such as Showalter, indicates in order to reference at this.
The pipeline of this structure and head assembly 6 have one first oxygen pipeline 14, by it, are used as the pressurised oxygen of oxidizing gas in heat chemistry mode cleaning operation, and an oxygen supply station that is schematically shown from Fig. 1 provides supreme workpiece preheating block assembly 7.By one second oxygen supply lines 15 oxygen is supplied with oxygen groove 16, groove 16 is being constituted between the workpiece preheating block assembly and by them up and down, when oxygen two workpiece preheating block inter-modules by the time just form the oxidizing gas stream 82 (Fig. 1 and 11) of a sheet, and along circulation path extend promptly as among Fig. 1 with " F " indications indicated, also be led to the metalwork that steel plate or other quilt are cleared up.This pipeline and head assembly also comprise water supply line 19, and this circuit schematically shows water stop water is conducted to workpiece preheating block assembly 7 from figure; Also have a water return pipeline 21, so promptly make the cooling water circulation by last workpiece preheating block assembly with known manner.Similar with it, pipeline and head assembly 6 comprise that also one supplies cooling water to give second water supply line 22 of workpiece preheating block assembly 9 down, and second water return lines 23, and both make cooling water circulate by following workpiece preheating block assembly together in due form.
Clear among Fig. 1 workpiece preheating block assembly 7 this on is shown, shown in a modularization substrate or deserve to be called piece 25 in addition, it contacts in stacked mode with the other side with last extension 26.Piece 25 adopts the securing member 27 that is fit to be fixed in (not shown) on the installed surface, and this face is made of pipeline and head assembly parts, and last extension 26 also is fixed in piece 25 with suitable securing member 29.Securing member 27 and 29 optional usefulness for example, bolt, or machine screw.
Aquaporin 30 in last extension 26, doing in normal way to have, and be communicated with water supply line 19 and flowing line 21, cooling water can form circulation like this.One first inner oxygen channel 31, or pipeline is done in last extension inside, and vertically be that length direction extends along it, give an oxygen row mouth 33 or a title discharge orifice for oxygen in the inside of last extension 26, just oxygen row mouth 33 shown in Fig. 1, but can imagine number being 5 people such as Showalter, 358,221 and 5,472, the mode of mistake described in detail is constructed a series of such exhaust outlets that separate along the length direction of last extension in 175 the United States Patent (USP), lists each patent here in order to reference.31 of oxygen channels are communicated with oxygen supply line 14.
Still see Fig. 1, last extension 26 comprises second oxygen channel 34 or a pipeline wherein, it makes longitudinal extension along the length direction of extension, the width that moves past the steel plate of cleaning plant forward along its transfer path relatively, thereby when this situation, steel plate is cleared up across entire upper surface by cleaning plant 5.Oxygen channel 34 also is communicated with oxygen supply line 14, and its position is in the end of combustion gas/oxygen jet device 35, and device 35 is placed in inside, and as the some of last extension 26.Spray nozzle device 35 is in above-mentioned patent, and promptly the people's and people's such as Showalter number is that 5,333,841 United States Patent (USP) inside have more detailed record to Showalter etc., lists in order to reference at this.Therefore, last extension 26 comprises the blast tube 37 or the pipeline of an inside, and it is along last extension length direction longitudinal extension, and is connected its near-end and far-end with spray nozzle device 35.The near-end of nozzle 35 flushes with the front of last extension 26, and such center oxygen or Oxygen Flow are promptly in other side ejection, and this Oxygen Flow is lived in a gas-flow protection that is wrapped in around it.
Last piece 25 and last extension 26 each with suitable durable metal, such as bronze, or copper product makes, and preferably uses copper.
Shown in Fig. 1-3 is the following workpiece preheating block assembly 9 of first embodiment, wherein descends the workpiece preheating block assembly to comprise a counterdie blocking substrate or following piece 38, and modularization lower extension 39 contacts with it and have at least a part to be stacked and placed on down on the piece 38.To descend piece 38 to be contained on pipeline and the head member 6 with the securing member (not shown) that is fit to removably.Lower extension 39 can be loaded on down piece 38 (Fig. 2-5) by removably as if needing, or as shown in Figures 9 and 10, also lower extension and following piece can be integral, and allows down piece and extension make single metal derby.Following piece 38 is fit to lower extension 39 each employing and durable metallic materials is made, as copper or bronze, and the most handy copper.
Referring to Fig. 2 and 3, the first two of workpiece preheating block assembly 9 type embodiment under being that illustrates.Following piece 38 comprise smooth above 41, opposed below 42, opposed end face 43 and 45, they connect this top and bottom with its common edge, face 46 is done extension longitudinally with opposed back 47 on the length direction of this time workpiece preheating block 38 before between end face 43 and 45.The feeding passage 49 of making to have water in the piece 38 47 extends and passes this front to front 36 from the back.The feeding passage 49 of water is communicated with the water supply line 22 shown in Fig. 1, and mode of communicating is open in people's such as Showalter 5,497,976 United States Patent (USP), so be listed as this appendix.Be provided with a concentric annular groove 50 around water feeding passage 49 openings, do on the front 46 of time workpiece preheating block, in order to place a suitable O type circle 53 (Fig. 3), its effect is in order to airtight this feeding water channel on extension 39.Also make to have a backwater channel 51 in the following piece 38, it 46 extends and passes nextly 47 from the front, and is connected with the flowing line 23 of Fig. 1.Be that institute's inlet channel of doing 49 is the same in following, an annular groove 52 is looped around the opening that makes on the front 46 by backwater channel 51, to admit O type circle 53 (Fig. 3) thus be sealed in piece and extension between passage 39.
As seen in fig. 1 and as people's such as Showalter 5,497, described in detail in No. 976 United States Patent (USP)s, have a series of isolated air supply duct 54 (in Fig. 1, only having represented) from the back 47 towards extending as the hole 55 of a gas pipeline and be communicated with it, vertical in piece 38 down constructs in this hole.Each corresponding air supply duct 54 is connected for burning line 18 with shown in Figure 1, or the substitute that adopts it to be suitable for.Although represent in detail inadequately, have along the elongate rod 55 ' of the spaced apart a series of horizontal annular disks of its length direction and pass this hole, in the hole, form the fuel gas supply chamber of right quantity, can make combustion gas make eddy current like this and mix, and pass through an exhaust outlet 56 with substantially uniform fluid.This stock with in 2,838,431 the United States Patent (USP) of dish apparatus structure, description is arranged at Allmang, be listed as this appendix.Now referring to Fig. 2, the exhaust outlet has here made long trough exhaust outlet 56, and its edge is the front 46 interior longitudinal extensions of workpiece preheating block 38 down, and extension makes it to be communicated with hole 55 in piece, so that obtain fuel gas supply therefrom.
The following workpiece preheating block assembly 9 of Fig. 2 also has one to make the separate type lower extension 39 that is loaded on this time piece front and is connected in the stacked mode of part with removably.Lower extension 39 have one overall smooth top 58 and one opposed below 59, the a pair of end face that separates 60 and 62 along its common limit in abutting connection with the extension top and bottom, reach the opposed back 64 of on this extension length direction, extending with a front 63, and along its common edge and upper and lower and end surfaces.As shown in figs. 1 and 3, slotted hole or aquaporin 66 along its longitudinal extension is communicated with at each end with a water supply conduit 67 work in extension inside, two feed pipes that separate are like this arranged in extension, such water supply conduit one is individual to be communicated with a water feed path 49, another then is communicated with drainage channel 51, and the water supply and sewage road is then constructed respectively in following piece 38.
Under two forms shown in Fig. 1 to 8 and 11 in the block assembly 9, threaded fastener (not shown) of lower extension 39 usefulness installs to down on the piece 38, it passes down one of aperture (not shown) that three separate on the piece back 47, and longitudinally pass in the screwed hole (figure does not show) at laggard three intervals that make in this time piece back 63, one of work three holes that separate 68 on this front 46 pairing one, install to down on the front of piece with known removably like this.Lower extension 39 also comprises at least one of known manner, and be two shop bolt (not shown)s that separate each other in this example, each pin extends laterally from this extension back 64 and is corresponding with the size and dimension in one of the corresponding hole 69 that makes in this time piece front, with guiding and aim at this lower extension to piece down.
As shown in figs. 1 and 3 be think in the present technique field the piece 38 and the extension 39 of two forms making of unknown form, this extension is fixed in this piece spare with removably, 58 will intersect with the exhaust outlet 56 of the front of this piece above it, and this extension will limit one and the steam vent 70 of exhaust outlet 56 Communicatings like this.The advantage of this structure is to be the exhaust outlet 56 of a groove at this, then can relatively easily reach in the manufacturing of this piece, to be milled into large-size very at low cost, and similarly be not people's such as Showalter 5,497, the extension of this time workpiece preheating block assembly in No. 976 United States Patent (USP)s show like that, mill into the notch of a precision.
Known to the those of ordinary skill in the present technique field, the combustion gas by this time workpiece preheating block assembly 9 ejection is in order to protect by at this this sheet oxidizing gas stream 82 (seeing Fig. 1,11) of producing of oxygen of workpiece preheating block inter-module and the groove 16 that is limited by it up and down.If allow surrounding air suck, that is to say mixing with it and form eddy current with this Oxygen Flow, will cause on this metalwork surface to be cleaned out undesirablely concavo-convexly to come, just must clean out more metalwork outer surface for obtaining smooth gouge surface like this, cause the result of undesirable reduction productivity ratio then.People's such as Showalter 5, in the cleaning plant that 497, No. 976 United States Patent (USP)s are made, be homogeneous substantially vertically, just by combustion gas on the width of cleaning thing along it, then realized protection to oxygen, thus make form the surface concavo-convex minimum and obtain smooth refacing.
Yet, this need do accurate processing to the trough on people's such as Showalter the following workpiece preheating block assembly extension, also will be to the interior stopper in the extension, and/or following of this workpiece preheating block assembly processes, mix with the eddy current of guaranteeing combustion gas, gas-flow could be done to assign equably and this Oxygen Flow and surrounding air are separated on extension is vertical like this.If in this protection combustion gas, have any opening, for example be that the part of groove has been blocked or gone out obstacle, then this protection just might have " breach ", will allow may the increasing of surrounding air take in oxygen stream.Although really having proved, the device of Showalter in this technical field, made significant improvement, the present invention disclosed herein then need not critically to process a groove on extension, but on the front of this time piece 38, be shaped or process a bigger groove, and come a hole on the stop block front with extension 39, such workpiece preheating block assembly should be easier manufacturing, if this extension damages in cleaning operation, metal for example takes place fuse generation, in other words extension damage, then this extension can be easy to by minimum cost, replace soon, rather than will replace a precision machined extension, thereby its maintenance is easier.
As shown in Figure 3, the back 64 of extension 39 is to contact with the front 46 of following workpiece preheating block 38, cause the corresponding aquaporin of being done in corresponding water supply conduit at 67 places and the following workpiece preheating block 49 and 51 to be aimed at, and therefore O type circle 53 is crushed on its groove 51 separately, among 52, in order to the water supply conduit on airtight this back, extension.As previously mentioned, like this after the upper surface 58 of this extension constituted the steam vent 70 of this time workpiece preheating block 38 then.
Guide edge shown in Fig. 2 71 is along the longitudinal extension of lower extension 39, at this above place 58 and the mutual boundary of front 63.But because the position of following workpiece preheating block 9 is more approaching by the metalwork of gouge than last workpiece preheating block assembly, so this extension guide margin need be protected, its purpose will have more detailed explanation hereinafter.Therefore, as shown in Figure 3, can will do in this place, thereby relatively extension front 63 makes guide margin 71 recessed, the extension front is protected or made this guide margin avoid damaging along the elongated slot 72 of lower extension 39 longitudinal extensions.Also have, as described above, the characteristics that this time workpiece preheating block assembly 9 makes two-piece type are: if extension 39 is impaired in cleaning technology, can take off and give replacement from following piece 38 easily and quickly.
One second embodiment of workpiece preheating block assembly 9 under shown in Fig. 4 to 6.The version of the following workpiece preheating block 38 of Fig. 4 is not except being that continuous elongated slot is as the exhaust outlet 56 (Fig. 1), with 38 of the following workpiece preheating blocks of Fig. 2 is the same, as air exit is the circular hole 56 ' of making the being aligned at a series of intervals in the front of following workpiece preheating block 38, each circular hole in piece, extends and with also be that work is communicated with in the hole 55 of inside.The version of the lower extension 39 of Fig. 4 is identical with the lower extension 39 of Fig. 2, does not repeat them here.
As the embodiment of following workpiece preheating block assembly 9 shown in Fig. 2 and 3, the following workpiece preheating block assembly of Fig. 4 to 6 is a two-piece type assembly; Wherein extension 39 assembles with removably, and part is stacked and placed on the front of this time piece 38.Referring to Fig. 5, among second embodiment of workpiece preheating block assembly, extension 39 defines a steam vent 70 under this, or in this example, the series of identical steam vent 70 (Fig. 6) across these front 46 longitudinal extensions of this time workpiece preheating block.The characteristics of this structure are also still simple relatively, and only boring one in the front of piece 38 down for example is 1/8 inch hole, and stacked according to the front 46 of 64 back length of extension 39 and this piece 38 then situation is regulated this steam vent 70 on demand.
As shown in Figure 6, by this extension it is constrained to the semi-circular hole at a series of intervals with this front and steam vent 56 ' the overlapping result who is brought, and wherein each is all as a steam vent 70 with extension 39 contact and part.Still as shown in Figure 5, the elongated slot of making 72 is along the longitudinal extension of this leading edge 71 above extension, make leading edge and above in scale removal process each by front 63 protection of assembly.
The 3rd embodiment of time workpiece preheating block assembly 9 has been shown among Fig. 7 and 8.The version of following piece 38 be the same shown in Fig. 2 and 4, just each circular hole 56 ' of being done on piece 38 fronts 46 under this embodiment comprises an inserts 57.Part 57 is preferably the copper plug-in unit of processing, is contained in separately the state hole 56 ' as a lining, and built-in internal channel is arranged as steam vent 70, and this part 57 passes circular hole and is communicated with the hole of doing 55 on the following piece 38.Among the workpiece preheating block assembly embodiment down shown in Figure 8, though extension 39 also is fixed to down piece 38 with removably, this extension is overlapping and to limit steam vent on this time piece front, and this steam vent 70 is to be limited by central passage of extending by each inserts 57 and making therein or hole.
So the design feature of the following workpiece preheating block assembly 9 of Fig. 7 and 8 is that the circular hole of being done on the following piece front 56 ' makes larger sized with respect to the holes that processed in the piece under Fig. 4 38.Can be relatively easily and make quickly in such hole, the passage of an accurate drilling is then arranged on inserts, for example is the through hole of 1/10th inches or 9 percent inch diameters, sprays combustion gas in the gouge scale removal process in herein.But, can partly cover inserts 57 and can form steam vent 70 by the hole restriction of boring in each inserts if necessary.
As shown in Figure 8, lower extension 39 have along in the above 58 with front 63 interconnective lengthwises to the guide margin 71 that extends, relative this extension front 63 also can be set make to hold a groove 72 of guide margin and make guide margin recessed, thereby be used for protecting and/or prevent because the following reason that will say in detail and damaging in the guide margin that gouge produces with respect to the front 63 of extension.
The 4th embodiment that has represented time workpiece preheating block assembly 9 among Fig. 9 and 10 wherein is provided with a modular single type workpiece preheating block assembly.The following workpiece preheating block assembly 9 of Fig. 9 comprises a following piece 38 ', it has top 41 of substantially flat, opposed following 42, a pair of separating and the opposed end face 43 and 45 that extends along the common edge of top and bottom, from end face 43 vertically extending to end face 45 and, and forming an a part of extension 39 ' of piece 38 ' at this piece along a back 47 of its common limit and this top and bottom adjacency.Extension 39 ' has one with top 58 of top 41 low predetermined altitudes of relative piece 38 '.Above 58 substantially parallel above 41.Below extension 39 ' has one 59, it and top 58 separate and opposed and a pair of opposed, the end face 60 and 62 that separates.Extension 39 ' also be included in the other side vertically/a long upwardly extending front 63, front 63 between face 60 and 62, and along this extend minister to the guide margin 71 that extends with above 58 adjacency.
In the embodiment of following workpiece preheating block assembly shown in Fig. 7 and 8, do to have alignment and a series of holes 56 ' at interval on the face 46 before at piece 38 ', the hole extends to a mold insert 57 that communicates and have corresponding front to describe in detail in each hole 56 ' with hole 55 in the piece, thereby this mold insert defines each corresponding steam vent 70 on the front of whole piece 38 ' down.
As clearly visible among Figure 10, extension 39 ' also does porose 66 in the following workpiece preheating block assembly in this example, in order to allow the cooling water circulation wherein, this hole is in proximate end face 43,45,60 and 62 each corresponding end form a water supply conduit 67 ', and the hole extends to the back 47 of piece 38 ' and opening thereon backwards, and of two corresponding water supply conduits 67 ' is communicated with supply channel 22 (Fig. 1) or with discharge pipe line 23 (Fig. 1).
Shown in Fig. 1 to 8 down workpiece preheating block assembly 9 be the embodiment of two-piece type, in the single type embodiment shown in Fig. 9 and 10, both following 38,38 ' and lower extension 39,39 ' then all make by a kind of metal material, the most handy bronze or copper are used copper and be more preferably.Though in the embodiments of the invention shown in Figure 2, air exit 56 is elongated slots, the air exit of the embodiment of the invention shown in Figure 4 is a series of circular holes 56 at interval, and this air exit of formation of the embodiment of the invention shown in Fig. 7 and 9 and hole is a series of holes 56 ' and set corresponding each inserts 57, but can imagine, as long as need, the air exit of any kind and/or the combination in hole can be set.For example, if be necessary,, all can be set up this a combustion gas/oxygen jet assembly 35 shown in Figure 1 in any hole in the corresponding opening 56 or 56 ' in 7 and 9 at Fig. 4.Therefore, each gas discharge outlet shown in Fig. 1 to Figure 10, and pore structure is only for illustrating but not the explanation of placing restrictions on property.
Operation
Even this of Fig. 1 to 10 time workpiece preheating block assembly 9 structure can be in cleaning in mode unknown in the present technique field to this i.e. protection of oxidizing gas stream protection that oxygen was constituted, even thereby obtain the following workpiece preheating block assembly of the unknown so far by groove 16 (Fig. 1).
Know as those skilled in the art, compression or claim pressed gas for example oxygen is when the aperture 81 by forming in place, oxygen groove 16 end in such as Fig. 1 and 11 that this gas can be tending towards expansion along the fluid path that flows by so-called expansion bevel angle (included angle of expansion) with it.In general, it is such that the angle that this expansion bevel angle is shown with label " A " notes in Figure 11 is measured, and is about 14 °.Workpiece preheating block modular construction under the present invention, it particularly is its extension, the advantage of utilizing this gas to expand allows to form a gas-flow that is the sheet sample, it is below Oxygen Flow and be adjacent to it, thus it along towards by the air flow path of the metal works cleared up by the time play the effect of protection Oxygen Flow.
As clearly visible in Fig. 1 and 11, the oxygen flow that flows through and sprayed by mouth 81 through notch 16 forms a kind of oxidizing gas stream 82 in the form of sheets, and is guided towards the metalwork of being cleared up along the fluid passage.As shown in figure 11, this oxidizing gas stream presents expansion with this expansion bevel angle A, this so that constituted one by along the exposure 86 of piece 38 fronts 46 down, above the extension 58 and the air cavity 88 that limited of this oxidizing gas stream 82.Exposure 86 is following front 46 that part of of remainder through extension 39 contact and after being stacked and placed on down the piece front.When passing through exhaust outlet 56,56 ' has sprayed combustion gas 85 and has passed through steam vent 70 subsequently, this oxidizing gas stream applies Pneumatic pressure and pushes this combustion gas, then can make along the combustion gas at the whole exposure of this longitudinal length place and distribute substantially equably, that is to say, in this air cavity 88, distribute equably on the same full width orientation of this oxidizing gas stream.
Can adopt the following workpiece preheating block and the descaling machine of existing type, for example be that state of Lay, southern Crow, not the Yi Shabai welding and cutting factory (the ESAB Welding and Culting Prodncts of Florence of Lawrence, Soarl, Carolina) make, top 58 1/4th inches places under 41 approximately in the above wherein, top 58 of extension 39 then stretches out 5/8ths inches respectively between the long length range of about one and one-quarter inch from the front 46 of this time piece 38,38 '.Here above following 38 under 41 with quite difficult description of this relation of the preset distance at extension 39 top 58 intervals, that is to say this segment distance that two correspondences are biased above, the top distance that will extend forward from the following front of piece between 21/2 to 5 times of this predetermined altitude of this extension.
But no matter be total distance of determining, can expect that top 58 will be not can directly not extend to it and this oxidizing gas stream intersection is so far away at oxidizing gas stream direction longshore current.If guide margin 71 intersects with Oxygen Flow, just can not form air drain 89, this can make surrounding air inspiration oxidizing gas stream and can cause undesirable eddy current effect, and this can make the oxidizing gas stream fluctuation.
58 development length also can be represented corresponding to angle of flare A on oxygen flow path direction, and this just defines by last piece this exposure 86 and 58 formed hypotenuses above the extension of 38.For example, if the expansion bevel angle of Fig. 1 is about 14 °, then use known geometrical relationship, the height of piece 38 exposures 86 then is this expansion tangent of an angle with the length ratio of corresponding extension 39 top 58, for this reason, the triangle both sides will be intersected with hypotenuse, and Oxygen Flow also must be like this.Therefore, can imagine exposure 85 height and corresponding above 58 length ratio will be to equal substantially but be less than the tangent of angle of flare A, just there are enough spaces to form air drain 89 connection air cavitys 88 in this Oxygen Flow 85 and 71 of guide margins like this, and form the sheet sample gas-flow 90 shown in Fig. 1 and 11.In a concrete example, angle of flare A is about 14 °, and exposure 86 height are about 1/4 inch, above 58 to be about be 1 inch.
A kind of method that adopts down workpiece preheating block assembly 9 to form sheet sample gas-flow 90 comprises: allow oxidizing gas stream 82 at following piece 38, above 38 ' 41 and extension 39,39 ' top 58,58 ' on flow through and step that this oxidizing gas stream flows and is spaced from guide margin 71 tops of this extension; Discharging combustion gas 85 in 46 the fuel gas exhaust mouth 56 in the urgent block assembly front of sticking face 41, form the gas-flow 90 of pressing close to the sheet oxidizing gas stream and thereunder forming second sheet, so that combustion gas by oxidizing gas stream and above 58, thereby 58 ' and made along evenly the distribute step of combustion gas of workpiece preheating block length component down by pneumatic compression.
This method also is included in the sheet oxidizing gas stream and above the extension 58, form the step of air drain 89 between this guide margin 71 of 58 ', this groove is across top 58 substantially, 58 ' the whole longitudinal extension, compressed on the aerodynamics meaning or extruding when causing combustion gas to pass through this groove, and make it to form the gas-flow 90 that is the sheet sample by the sheet oxidizing gas stream, this gas-flow evenly distributes under oxidizing gas stream when this sheet gas-flow is flowed through air drain, the effect that this technology forms is, contiguous this oxidizing gas stream 82 and its sheet gas-flow down play this oxidizing gas stream of protection not with the ambient atmosphere persorption, thereby make the steel plate S (Fig. 1) that passes through from cleaning plant 5 obtain more smooth finishing face.
In addition, as the part of this process that forms the sheet gas-flow, when this combustion gas during from fuel gas exhaust mouth 56 ejections that piece front down constitutes, by Oxygen Flow 82,58,58 ' between it, form air cavity 88 (Figure 11) with following piece exposure 86 and above the extension.Then make to have air drain 89 for making to be communicated with air cavity.The top interlayer of this oxidizing gas stream 82 with the mode in people's such as Showalter several patents, described in advance, by on workpiece preheating block assembly 7 oxygen and this oxygen/gas stream that are sprayed protected, these patents are listed appendix at this.
Though the preferred embodiments of the present invention are open, self-evident in the specification in front, those skilled in the art are under the prerequisite of the aim of the present invention of not leaving appended claims and spirit, can it is modified and changes.In addition, at this as concrete requirement, the corresponding construction in claims to right, material, effect reaches the device of all additional functions or the equivalent of step and comprises that into all realize the structure of the described function of this claim in conjunction with the element of other claims, material, or effect.
Claims (2)
1, a kind of following block assembly that is used in the heat chemistry cleaning plant comprises:
A block, it has opposed top and bottom, opposed both ends of the surface, and extend opposed front-back between described end face, thus between forward and backward, determined the vertical of extension,
An extension, it extends forward from the front of this block and has comprised above one second that is parallel to above described, above second this above block under, a predetermined altitude arranged above first, wherein, this second extend forward from this front one be about between 21/2 to 5 times of this predetermined altitude distance and
An exhaust outlet structure, its position is on this time piece and between above second, be communicated with this front and across whole lengthwise scope longitudinal extension of fronts almost, cause a gas to discharge and to form a kind of sheet air-flow forward from this mouth structure, this air-flow forward-facing extends on second.
2, a kind of heat chemistry cleaning plant, it comprises:
Last block below band,
A following piece, it has opposed top and bottom, opposed end face, and between this end face, extend, define therebetween extend one front-back longitudinally, described piece down is positioned under the piece, causes this on below the piece and following elongated slot of formation above the piece, can be cleared up first gas that metal works discharges a sheet airflow pattern towards forward direction by this groove
An extension, it extends forward from this piece front, it comprises that one is parallel to this above second above piece, this above second be with following above the piece isolated and
A gas discharge outlet structure, it on this time piece with above the extension second between and be communicated with this time piece front, and this floss hole device is longitudinal extension in almost across the front longitudinal extent, cause one second gas to discharge and to form forward from this mouthful device across this a kind of second sheet air-flow in face of on second, and therefore constituting an air drain at this first sheet air-flow and between above the extension second, groove works to compress it in the process on this second sheet air-flow moves forward across extension block second.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/156992 | 1998-09-18 | ||
| US09/156,992 US6174491B1 (en) | 1998-09-18 | 1998-09-18 | Lower pre-heat block for use in metal scarfing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1250706A true CN1250706A (en) | 2000-04-19 |
| CN1130272C CN1130272C (en) | 2003-12-10 |
Family
ID=22561919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99122457A Expired - Lifetime CN1130272C (en) | 1998-09-18 | 1999-09-17 | Under workpiece preheating block used for metal cleaning apparatus |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US6174491B1 (en) |
| EP (1) | EP0987078B1 (en) |
| JP (1) | JP3447628B2 (en) |
| KR (1) | KR100383868B1 (en) |
| CN (1) | CN1130272C (en) |
| AT (1) | ATE268664T1 (en) |
| BR (1) | BR9904232A (en) |
| CA (1) | CA2282559C (en) |
| DE (1) | DE69917851T2 (en) |
| ES (1) | ES2218956T3 (en) |
| TW (1) | TW393357B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209602A (en) * | 2008-11-13 | 2011-10-05 | 新日本制铁株式会社 | Steel piece hot scarfing device and nozzle clogging detection method thereof |
| CN112958629A (en) * | 2021-01-29 | 2021-06-15 | 嘉兴学院 | Non-ferrous metal calendering equipment |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6174491B1 (en) * | 1998-09-18 | 2001-01-16 | The Esab Group, Inc. | Lower pre-heat block for use in metal scarfing apparatus |
| JP5146838B2 (en) * | 2009-03-06 | 2013-02-20 | 新日鐵住金株式会社 | Hot scarf |
| KR101126613B1 (en) * | 2009-05-21 | 2012-03-26 | 지.티.에스 (주) | Show block which minimizes influx of melting |
| JP5251784B2 (en) * | 2009-08-10 | 2013-07-31 | 新日鐵住金株式会社 | Scarfing equipment |
| JP5601055B2 (en) * | 2010-07-06 | 2014-10-08 | Ｊｆｅスチール株式会社 | Surface care method and apparatus for continuous cast slab |
| KR101524867B1 (en) * | 2013-11-28 | 2015-06-03 | 삼신플랜트 주식회사 | Lower block assembly type |
| KR101796080B1 (en) * | 2016-05-25 | 2017-11-10 | 주식회사 포스코 | Lower block and scarfing nozzle having the same |
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| US2356197A (en) | 1941-12-19 | 1944-08-22 | Linde Air Prod Co | Blowpipe device |
| US2838431A (en) | 1953-05-26 | 1958-06-10 | Union Carbide Corp | Method and apparatus for thermochemical metal scarfing |
| US3231431A (en) | 1964-06-24 | 1966-01-25 | Union Carbide Corp | Post-mixed fuel gas preheat scarfing |
| SE341508B (en) * | 1965-11-22 | 1971-12-27 | Union Carbide Corp | |
| US4115154A (en) | 1977-09-26 | 1978-09-19 | Union Carbide Corporation | Method and apparatus for producing a post-mixed, stabilized scarfing pre-heating flame |
| US4287005A (en) * | 1979-11-05 | 1981-09-01 | Union Carbide Corporation | Instantaneous scarfing by means of a pilot puddle |
| US4389038A (en) | 1982-01-11 | 1983-06-21 | Union Carbide Corporation | Scarfing apparatus |
| CA1323828C (en) * | 1986-10-22 | 1993-11-02 | Ronald Elmer Fuhrhop | Scarfing nozzles |
| JPH02109134A (en) * | 1988-10-18 | 1990-04-20 | Fujitsu Ltd | Calculation system for control code length of compiler |
| US5358221A (en) | 1991-12-09 | 1994-10-25 | The Esab Group, Inc. | Block assembly for use in metal scarfing apparatus |
| US5234658A (en) | 1991-12-09 | 1993-08-10 | Esab Welding Products, Inc. | Scarfing apparatus |
| US5304256A (en) | 1991-12-09 | 1994-04-19 | Esab Welding Products, Inc. | Scarfing method |
| US5497976A (en) | 1995-01-18 | 1996-03-12 | The Esab Group, Inc. | Lower block assembly for use in metal scarfing apparatus |
| US5520370A (en) | 1995-02-01 | 1996-05-28 | The Esab Group, Inc. | Gas distribution manifold for metal scarfing apparatus |
| US6174491B1 (en) * | 1998-09-18 | 2001-01-16 | The Esab Group, Inc. | Lower pre-heat block for use in metal scarfing apparatus |
-
1998
- 1998-09-18 US US09/156,992 patent/US6174491B1/en not_active Expired - Lifetime
- 1998-12-28 TW TW087121722A patent/TW393357B/en not_active IP Right Cessation
-
1999
- 1999-09-17 CN CN99122457A patent/CN1130272C/en not_active Expired - Lifetime
- 1999-09-17 EP EP99307386A patent/EP0987078B1/en not_active Expired - Lifetime
- 1999-09-17 AT AT99307386T patent/ATE268664T1/en active
- 1999-09-17 CA CA002282559A patent/CA2282559C/en not_active Expired - Lifetime
- 1999-09-17 KR KR10-1999-0040206A patent/KR100383868B1/en not_active IP Right Cessation
- 1999-09-17 DE DE69917851T patent/DE69917851T2/en not_active Expired - Lifetime
- 1999-09-17 ES ES99307386T patent/ES2218956T3/en not_active Expired - Lifetime
- 1999-09-20 BR BR9904232-0A patent/BR9904232A/en not_active IP Right Cessation
- 1999-09-20 JP JP26543799A patent/JP3447628B2/en not_active Expired - Fee Related
-
2000
- 2000-07-20 US US09/620,420 patent/US6440229B1/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209602A (en) * | 2008-11-13 | 2011-10-05 | 新日本制铁株式会社 | Steel piece hot scarfing device and nozzle clogging detection method thereof |
| CN102209602B (en) * | 2008-11-13 | 2014-06-18 | 新日铁住金株式会社 | Steel piece hot scarfing device and nozzle clogging detection method thereof |
| CN112958629A (en) * | 2021-01-29 | 2021-06-15 | 嘉兴学院 | Non-ferrous metal calendering equipment |
| CN112958629B (en) * | 2021-01-29 | 2023-01-13 | 嘉兴学院 | Non-ferrous metal calendering equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| US6440229B1 (en) | 2002-08-27 |
| EP0987078A2 (en) | 2000-03-22 |
| CA2282559A1 (en) | 2000-03-18 |
| CN1130272C (en) | 2003-12-10 |
| ATE268664T1 (en) | 2004-06-15 |
| US6174491B1 (en) | 2001-01-16 |
| JP2000094124A (en) | 2000-04-04 |
| ES2218956T3 (en) | 2004-11-16 |
| EP0987078B1 (en) | 2004-06-09 |
| KR20000023274A (en) | 2000-04-25 |
| DE69917851D1 (en) | 2004-07-15 |
| DE69917851T2 (en) | 2005-06-30 |
| KR100383868B1 (en) | 2003-05-14 |
| EP0987078A3 (en) | 2001-12-05 |
| JP3447628B2 (en) | 2003-09-16 |
| CA2282559C (en) | 2004-04-13 |
| BR9904232A (en) | 2000-09-05 |
| TW393357B (en) | 2000-06-11 |
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